Amkor Technology (AMKR) CFO logs RSU vesting and tax share withholding

Rhea-AI Filing Summary

Amkor Technology CFO Megan Faust reported RSU vesting and related tax withholding transactions. On February 16, 2026, 4,176 restricted stock units were exercised into 4,176 shares of common stock at $0.00 per share, increasing her directly held common stock to 101,214 shares.

On the same date, 1,912 shares of common stock at $47.48 per share were withheld by Amkor to cover her tax obligations associated with vesting, reducing her direct holdings to 99,302 shares after settlement. These RSUs come from a 16,703-unit grant awarded on February 16, 2023 that vests in four equal annual installments beginning on the first anniversary of the grant date.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Faust Megan

(Last) (First) (Middle)

2045 E INNOVATION CIRCLE

(Street)

TEMPE AZ 85284

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AMKOR TECHNOLOGY, INC. [ AMKR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CFO

3. Date of Earliest Transaction (Month/Day/Year)
02/16/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/16/2026		M		4,176	A	$0	101,214	D
Common Stock	02/16/2026		F(1)		1,912	D	$47.48	99,302	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	$0(2)	02/16/2026		M			4,176	(2)	(2)	Common Stock	4,176	$0	4,175	D

Explanation of Responses:

1. The transaction represents shares withheld by Amkor Technology, Inc. (the "Issuer") in connection with the vesting of certain restricted stock units ("RSUs") granted to the Reporting Person on February 16, 2023 (the "Grant Date") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person.

2. On the Grant Date, the Reporting Person was granted 16,703 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date.

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for Megan Faust	02/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did Amkor (AMKR) CFO Megan Faust report?

Amkor CFO Megan Faust reported RSU vesting and related tax withholding. She exercised 4,176 restricted stock units into 4,176 common shares, then had 1,912 shares withheld by the company to cover tax obligations tied to this vesting event under its equity incentive plan.

How many Amkor (AMKR) shares did Megan Faust acquire and what was the price?

Megan Faust acquired 4,176 Amkor common shares from vested restricted stock units at $0.00 per share. These shares came from previously granted RSUs converting into stock, reflecting compensation vesting rather than an open-market purchase at a cash price per share.

What shares were withheld for Megan Fausts taxes in this Amkor (AMKR) filing?

The company withheld 1,912 Amkor common shares at $47.48 per share to satisfy Megan Fausts tax obligations from RSU vesting. Amkor will pay the associated taxes on her behalf, using the value of these withheld shares to cover the liability.

How many Amkor (AMKR) shares does Megan Faust hold after these transactions?

After the RSU conversion and tax withholding, Megan Faust directly holds 99,302 Amkor common shares. Her holdings first increased to 101,214 shares after 4,176 RSUs converted, then decreased when 1,912 shares were withheld to cover taxes due on the vesting event.

What are the vesting terms of Megan Fausts Amkor (AMKR) restricted stock units?

On February 16, 2023, Megan Faust received a grant of 16,703 restricted stock units from Amkor. These RSUs vest in four equal annual installments, starting on the first anniversary of the grant date, meaning the award delivers shares over a multi-year compensation schedule.

Does this Amkor (AMKR) Form 4 show an open-market sale by the CFO?

The Form 4 does not show an open-market sale by the CFO. Instead, 1,912 shares were withheld by Amkor at $47.48 per share solely to cover her tax obligations from RSU vesting, with the company paying those taxes on her behalf.